Triflic Acid-Catalyzed Cycloisomerization of 1,6-Enynes: Facile Access to Carbo- and Azaheterocycles
作者:Xiang Liu、Yuhan Wang、Jinlei Zhou、Yue Yu、Hua Cao
DOI:10.1021/acs.joc.9b03112
日期:2020.2.21
new and efficient strategy for enynes cyclizationcatalyzed by triflicacid has been described. Various valuable carbocycle-fused and heterocycle-fused ketones were easily accessed by the formation of new C-C and C-O bond under benign reaction conditions. This protocol also provides another opportunity to construct polycyclic single-nitrogen ketones via a cation-induced cascade cyclization of polyenynes